Pircon R A, Porto M, Towers C V, Crade M, Gocke S E
Department of Obstetrics and Gynecology, Memorial Women's Hospital, Long Beach, California.
J Ultrasound Med. 1989 Sep;8(9):507-11. doi: 10.7863/jum.1989.8.9.507.
Antepartum ultrasound scans of seven pregnancies complicated by fetal triploidy were reviewed. Estimated gestational age (EGA) by ultrasound lagged EGA by last menstrual period in six of seven patients. Normal interval growth of biparietal diameter in the second trimester was demonstrated in all fetuses that had serial scans. Sonographic features commonly associated with fetal triploidy; such as oligohydramnios and cephalocorporal disproportion, were seen in only two cases. Fetal anomalies were evident by ultrasound in five of seven patients. Six of seven patients had partial moles. All of these patients had placentas that appeared abnormal. The ultrasound appearance of the placenta, however, was not the same with each case. Therefore, sonographic features of pregnancies complicated by fetal triploidy are not uniform and the diagnosis cannot be made by ultrasound alone.
回顾了7例合并胎儿三倍体妊娠的产前超声扫描结果。7例患者中有6例超声估计孕周（EGA）落后于末次月经计算的孕周。所有接受系列扫描的胎儿在孕中期双顶径均呈正常的间隔生长。仅2例出现了与胎儿三倍体常见相关的超声特征，如羊水过少和头体比例失调。7例患者中有5例超声显示胎儿异常。7例患者中有6例为部分性葡萄胎。所有这些患者的胎盘均表现异常。然而，每个病例中胎盘的超声表现并不相同。因此，合并胎儿三倍体妊娠的超声特征并不一致，不能仅通过超声作出诊断。
